Feel free to correct me if im wrong.
OMPI assumes you have a fast network and checks for them. If they
are not found it falls back to tcp.
So if you leave out the --mca etc etc It should use the mx if
its available. Im not sure how MX responds if one of the hosts does
not have a
Dear OpenMPI List:
>From looking at a recent thread, I see an mpirun command with shared
memory and mx:
mpirun -mca btl mx,sm,self -np 2 pi3f90.x
This works. I may have forgot to mention it, but I am using 1.1.2. I
see there is an -mca mtl in version 1.2b1 . I do not think this exist
